ArticlePhotosynthesis research2020
Characterization of fluorescent chlorophyll charge-transfer states as intermediates in the excited state quenching of light-harvesting complex II.
Article in Photosynthesis research, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
23 citing papers in PubMed, 47 citations in OpenAlex.
- Dynamic LHCI antenna and inter-photosystem spillover enable flexible light harvesting in Euglena gracilis.The Plant journal : for cell and molecular biology · 2026Article
- The role of far-red fluorescing chlorophylls in the quenching of LHCII.Photosynthesis research · 2026Article
- Review
- Distinctive and functional pigment arrangements in Lhcp, a prasinophyte-specific photosynthetic light-harvesting complex.Communications biology · 2025Article
- Excitation landscape of the CP43 photosynthetic antenna complex from multiscale simulations.Chemical science · 2024Article
- Excitation Energy Transfer between Higher Excited States of Photosynthetic Pigments: 1. Carotenoids Intercept and Remove B Band Excitations.ACS omega · 2023Article
- Excitation Energy Transfer between Higher Excited States of Photosynthetic Pigments: 2. ChlorophyllACS omega · 2023Article
- A perspective on the major light-harvesting complex dynamics under the effect of pH, salts, and the photoprotective PsbS protein.Photosynthesis research · 2023Review
- Photoinduced chlorophyll charge transfer state identified in the light-harvesting complex II from a marine green algaiScience · 2023Article
- Spruce versus Arabidopsis: different strategies of photosynthetic acclimation to light intensity change.Photosynthesis research · 2022Article
- The coupled photocycle of phenyl-p-benzoquinone and Light-Harvesting Complex II (LHCII) within the biohybrid system.Scientific reports · 2022Article
- Symmetry breaking in photosystem I: ultrafast optical studies of variants near the accessory chlorophylls in the A- and B-branches of electron transfer cofactors.Photochemical & photobiological sciences : Official journal of the European Photochemistry Association and the European Society for Photobiology · 2021Article
- Photosynthetic Light-Harvesting (Antenna) Complexes-Structures and Functions.Molecules (Basel, Switzerland) · 2021Review
- Dynamic Changes in Protein-Membrane Association for Regulating Photosynthetic Electron Transport.Cells · 2021Review
- Absence of far-red emission band in aggregated core antenna complexes.Biophysical journal · 2021Article
- Antenna Protein Clustering In Vitro Unveiled by Fluorescence Correlation Spectroscopy.International journal of molecular sciences · 2021Article
- Trivial Excitation Energy Transfer to Carotenoids Is an Unlikely Mechanism for Non-photochemical Quenching in LHCII.Frontiers in plant science · 2021Article
- A novel method produces native light-harvesting complex II aggregates from the photosynthetic membrane revealing their role in nonphotochemical quenching.The Journal of biological chemistry · 2020Article
- Direct energy transfer from photosystem II to photosystem I confers winter sustainability in Scots Pine.Nature communications · 2020Article
- Time- and reduction-dependent rise of photosystem II fluorescence during microseconds-long inductions in leaves.Photosynthesis research · 2020Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
5 authors at 2 institutions in 3 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Light-harvesting complex II (LHCII) is the major antenna complex in higher plants and green algae. It has been suggested that a major part of the excited state energy dissipation in the so-called "non-photochemical quenching" (NPQ) is located in this antenna complex. We have performed an ultrafast kinetics study of the low-energy fluorescent states related to quenching in LHCII in both aggregated and the crystalline form. In both sample types the chlorophyll (Chl) excited states of LHCII are strongly quenched in a similar fashion. Quenching is accompanied by the appearance of new far-red (FR) fluorescence bands from energetically low-lying Chl excited states. The kinetics of quenching, its temperature dependence down to 4 K, and the properties of the FR-emitting states are very similar both in LHCII aggregates and in the crystal. No such FR-emitting states are found in unquenched trimeric LHCII. We conclude that these states represent weakly emitting Chl-Chl charge-transfer (CT) states, whose formation is part of the quenching process. Quantum chemical calculations of the lowest energy exciton and CT states, explicitly including the coupling to the specific protein environment, provide detailed insight into the chemical nature of the CT states and the mechanism of CT quenching. The experimental data combined with the results of the calculations strongly suggest that the quenching mechanism consists of a sequence of two proton-coupled electron transfer steps involving the three quenching center Chls 610/611/612. The FR-emitting CT states are reaction intermediates in this sequence. The polarity-controlled internal reprotonation of the E175/K179 aa pair is suggested as the switch controlling quenching. A unified model is proposed that is able to explain all known conditions of quenching or non-quenching of LHCII, depending on the environment without invoking any major conformational changes of the protein.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.